 /*******************************************************************************
  * Copyright (c) 2000, 2004 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Common Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/cpl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.ui.wizards.datatransfer;

 import java.io.*;

 import org.eclipse.core.resources.*;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IPath;

 /**
  * Helper class for exporting resources to the file system.
  */
 /*package*/ class FileSystemExporter {
 /**
  * Creates the specified file system directory at <code>destinationPath</code>.
  * This creates a new file system directory.
  */
 public void createFolder(IPath destinationPath) {
     new File(destinationPath.toOSString()).mkdir();
 }
 /**
  * Writes the passed resource to the specified location recursively
  */
 public void write(IResource resource,IPath destinationPath) throws CoreException, IOException {
     if (resource.getType() == IResource.FILE)
         writeFile((IFile)resource,destinationPath);
     else
         writeChildren((IContainer)resource,destinationPath);
 }
 /**
  * Exports the passed container's children
  */
 protected void writeChildren(IContainer folder, IPath destinationPath) throws CoreException, IOException {
     if (folder.isAccessible()) {
         IResource[] children = folder.members();
         for (int i = 0; i<children.length; i++) {
             IResource child = children[i];
             writeResource(
                 child,
                 destinationPath.append(child.getName()));
         }
     }
 }
 /**
  * Writes the passed file resource to the specified destination on the local
  * file system
  */
 protected void writeFile(IFile file, IPath destinationPath) throws IOException, CoreException {
     FileOutputStream output = null;
     InputStream contentStream = null;

     try {
         contentStream = file.getContents(false);
         output = new FileOutputStream(destinationPath.toOSString());
         int chunkSize = contentStream.available();
         byte[] readBuffer = new byte[chunkSize];
         int n = contentStream.read(readBuffer);
         
         while (n > 0) {
             output.write(readBuffer);
             n = contentStream.read(readBuffer);
         }
     } finally {
         if (output != null)
             output.close();
         if (contentStream != null)
             contentStream.close();
     }
 }
 /**
  * Writes the passed resource to the specified location recursively
  */
 protected void writeResource(IResource resource,IPath destinationPath) throws CoreException, IOException {
     if (resource.getType() == IResource.FILE)
         writeFile((IFile)resource,destinationPath);
     else {
         createFolder(destinationPath);
         writeChildren((IContainer)resource,destinationPath);
     }
 }
 }

